To clear content we will always have Yun. I don't share him anymore as my main friend unit, because I only have one decent set of TDW gear, but I have him ready to jump in should anyone fancy doing a trial.

You can just skip next weeks GLEX Edel Killer :-D And if the Item is not one of those once in a games lifetime, like moogle charm, you won't miss a thing if you skip entire events. Try it. I did it twice and can say it's good.